Friction draft-rigging for railway-cars.



J P. OCONNOR. FRICTION DRAFT RIGGING FOR RAILWAY CARS.

, APPLICATION FILED JAN. 7, 1909 Patented May 25, 1909.

John F0 Zaxzaor J; Mar, Z zML,QM

4%rzz%d JOHN F. OCONNOR, OF CHICAGO, ILLINO S, AS

a rains.

dim

ILLINOIS, A CORPORATION OF ILLINOIS.

FRICTION DRAFT-RIGGING- No. 922,6i9.

I Application filed January To all whom it may concern:

Be it known that 1, JOHN F. OCoNNon, a

citizen of the United States, residing in Chi-v cago, in the county of Cook and State of Illinois, have invented a new and useful Imrovement in Friction Draft Rigging for ailway Cars,- of which the following is a specification.

My invention relates to improvements in draft rigging for railway cars.

The friction draft rigging of the kind to which my invention relates com rises in connection with the draw-bar, dra tyoke, draft lugs' and followers, a longitudinally movable friction shell having a transverse partition therein, a preliminary compression follower and spring on one side of said'transverse partition and a main spring and longitudinally movable friction blocks on the opposite side of said partition, a wedge between said friction blocks, and anti-friction rollers interosed between the inclined or wedging faces of the wedge and friction blocks, one on each side of the wedge and each roller having a rolling action on both the wedge and friction block between which it is interposed, the wedge and friction blocks having coeperating shoulders to keep the rollers in proper transverse alinement. And my present improvement consists in combining with these parts a roller holder or centering device to keep the rollers from sli ping endwise and thus engaging and bin ing at their ends against the interior surface of the friction shell and thus interfering with the pro er operation of the other devices. This rol er holder or centermg device preferably consists of a bar ada ted to fit between the point or inner end of t e wedge and the adjacent friction block, and provided with a air'of disk like rojec tions ada ted to em race the anti-fiiction roller an keep it in place longitudinally. The roller holder bar is preferably furnished nearits middle with a projection or lug to give it a restricted bearing or contact with the wedge.

In the accompanying drawing forming a art of this specification, Figure 1 is a side elevation partly in central, vertical section of-a friction draft rigging embodying my in vention. Fig. 2 is a vertical cross section on line 2-2 of Fig. 1 and Fi 3 is a detail pers ective view of the roller older or centerin evice. Fig. 4 is a detail partial horizonta section.

Specification of Letters Patent.

FOR RAILWAY-CARS.

Patented May 25, 1909.-

'1, was. seen No. 471,060.

Inthsdrawing, A represents the center sills or draft members of the car to which the draft rigging is ap lied, A the draw-bar, B t e draw-bar yoke, C the side plates or draft members having the customar front, rear and intermediate stops or draft lugs for the followers D D to abut against.

E E are the main draft rigging springs, the reliminary compressing spring, F the longitudinally movable friction shell or case, having an internal friction face f and provided with an integral transverse partition or web f against which one end of the main springs E E abut, and against which one end of the preliminary compression spring E also abuts. The main s rings E Eabut at their other end against tlie friction blocks or shoes F, the springs E E being thnsirrterosed between the friction shoes and friction shell. The preliminary'compression follower D is interposed between the rear follower D and the reliminary compression spring G is tfie wedge and g g the anti-friction rollers inte osed between the inclined faces g of the we go and the inclined faces f 2 of the friction shoes or blocks F F. The wedge G also has stop shoulders g cooperating with similar sto shoulders f 3 on the friction shoes to hold t 1e anti-friction rollers in place. The friction shoes or blocks F are provided with shoulders to engage the lugs h of the connecting device or rod H which extends longitudinally through the main springs E E and through the transverse partition web f of the friction shell F and engages the preliminary compression follower D to which it'is connected by a threaded stem h and adjusting nut h*. The connecting device or red H is further provided with an integral stop shoulder or web it age the transverse partition f of the fric- -tion shell so that this one connecting device or rod H will serve to hold both the preliminary compression spring E and the main springs E E under an initial tension or load as we 1 as to hold all the parts, friction shell, friction blocks, wedge, antifriction rollers, main springs, preliminary compression spring and preliminary compression follower in proper assembled position and cooperative relation with each other.

To keep the antifnction rollers from slipping longitudinally and bearing or binding and grinding against the interior surface of.

adapted to enthe front sill, B

the friction shell F at their ends, I combine with the friction shell, friction blocks or shoes and wedge, a roller holder or centering device 'M preferably consisting of arec-5 of the friction block m m having flat and beveled or inof the mnersurface of rovided pref ug or projecwith the head or inner iron or pl'ate K is furnished with a longitudinal channel K -to receive the lower member of the'draft yoke.

In practice, the main draft rigging s rings E are preferably put under an initia compression of about three-eighths'ofan inch, and

the preliminary compression spring under an initial compression of about one eighth of an for inch when the several parts are assembled use. The preliminary compression spring E is short and adapted to permit a out one half inch preliminary cushion movement of the draw-bar before the friction cushioning devices F F are brought rnto action or forced to frictionally slide in res ectto each other.

* thus left free to release cushioning rigging springs E E invention neither the main draft nor 1 the preliminary compresslonrspring E act or bear directly against the wedge, and as the wedge has anti-friction rollers on both sides of it, it is or retract after each movement or compression of the us'insuring a free, easy and persin my springs, t

fect release and completely overcoming anytendency of "the friction devices to stick or fail in releasing, the roller holder or centering device H cooperating to insure the accomlishment of this result by preventing the engthwise movement of the rollers and consfiqlrient binding thereof against the friction s e The initial tension or compression under which the connecting bar or device holds the of the wedge and theaving at its ends a pair of large corresponding some-- The roller holder or- 1. In a frictiondraft rigging, nation with a friction shell, of friction shoes. within the shell, a spring between the fric springs causes the cushioning mechanism of the draft riggmg to remain always of, the

same proper standard length, notwithstanding the wear that may take lace between the friction elements of the cus anism. The initial tension under which the springs are held should be, as before stated,

a proximately one-half-inch, so as to give t e draft rigging provision for taking up a amount of'wear between the friction shoes and friction shell, without affecting the normal action of the draft rigging. This initial tension under which the connecting 'oning mechdevice holds the springs also keeps all the partsin snug and each other.

I claim proper engagement with the combition shoes and shell, a wedge, anti-friction, rollers between arms embracing the ends specified.

the wedge and shoes and a, roller holder extending between thefriction' shoes and havin of the antifrict1on roller, substantially as 2. In a friction draft rigging, the combination with a friction shell, friction shoes and an anti-friction roller, of a holder therefor furnished with arms embracing the ends of Eihe anti-friction roller, substantially as speci-' 3. In friction draft rigging having an antifriction roller acting upon a friction shoe, a holder therefor consistrn of a bar furnished with projecting arms embracing the ends of the roller, substantially as specified.

4. In a friction draft rigging having an anti-friction roller acting upon a friction shoe, a holder therefor consisting of a bar furnished with projecting arms embracing the ends of the roller, said arms having flat parallel inner faces, substantially as specified.

5. In a friction draft rigging having an anti-friction roller acting upon a friction shoe, a holder therefor consisting of a bar furnished with pro ecting arms embracing H. M. MUNDAY, Esrnnn ABRAMS. 

